Window-ventilator



(No Model.)

M. A. W. LOUIS. WINDOW VENTILATOR.

No. 588,157. Patented Aug. 17,1897.

Emil 6 s MICHAEL A. \V. LOUIS,

PATENT OFFICE.

OF CINCINNATI, OHIO.

WINDOW-VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 588,157, dated August 17, 1897.

Application filed January 4, 1897. Serial No. 617,919. (NomodeL) T 60% whom it may concern.-

Be it known that I, MICHAEL A. TV. LOUIS,

a citizen of the United States, residing at Gin- .meeting-rails of the window-sashes in such manner that the air in its admission will be directed against the pane of the upper sash and from there diffused into the atmosphere of the room, thereby preventing any direct drafts upon the room occupants.

A further object of my improved construction is to effectually prevent any danger of the sash-lock being tampered with from the outside while the ventilator is open.

These objects I accomplish in the manner and by the means hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is an elevation of a portion of a window-frame, showing the meeting sashrails with my improved device attached thereto. Fig. 2 is an enlarged detail front elevation of one of my improved devices. Fig. 3 is an enlarged detail rear elevation of the same, shown partly in section. Fig. 4 is a vertical transverse section taken through the meeting-rails on the line a; a, Fig. 1. Fig. 5 is a view similar to Fig. 4, illustrating a slightly-modified construction. Fig. 6 is a detail perspective view of the slide for controlling the passage of air into the room.

Similar numerals of reference denote corresponding parts in the several views.

In the said drawings the reference-numeral 1 denotes the upper sash, and 2 the lower sash, of an ordinary window. The meetingrails 3 4 of these sashes may be provided with a series of inclined apertures 5, adapted to register with each other when the window is closed, as shown in Fig. 4, or the said meeting-rails m'aythave their inclined adjacent faces cut away along a portion of their length, thus providing for the passage of air, as shown at 6 in Fig. 5.

Affixed to the top of the lower meeting-rail 4 are the ventilators 7, preferably two in numvided with a series of openings 10 in its ver tical side adjacent to the upper window-pane. Mounted inside said ventilator is'a slide 11, apertured at 12 in a manner corresponding to the apertures 10 and provided with a horizontal extension 13, having longitudinal slots 14 therein to provide for the sliding engagement of said slide with the ventilator 7 through the bolts 15. Ahandpiece 16 projects through a slot 17 in the front side of the ventilator 7 and serves as a means for controlling the position of said slide 11. This handpiece is formed with a removable knob 22, between which and the handpiece proper may be located a plate 23, closing the opening 17 and on which may be marked the words Open and Shut, one on each side of said knob and so arranged that but one will be disclosed at a time, thus indicating the position of the said slide; or, if desired, the said words maybe placed upon the front panel of the Ventilator, one on each side of or above the opening 17, and will thus indicate the condition of the ventilator by the position of the knob 22 with respect to said words, as will be readily understood.

Formed on one side of the handpiece 16 and in one end of the ventilator are the lugs 18, to which are attached the ends of a coiled spring 19, as shown, the tension of said spring tending to normally retain the slide 11 in such position that the apertures 12 are out of re cord-holder may be provided on the vertical portion of the'lowerwindow-sash with which to engage the cord to retain the slide 10 against the tension of the spring 19.

the meeting-rails 3 4, so that air from the outside passes freely through said apertures into the ventilators when the window is closed,

the springs 19 retaining the slides 11, so that the apertures 10 and 12 are out of register.

Now when it is desired to ventilate the room it is only necessary to pull down the cords 20, thus moving the slides 11 against the tension of the springs 19 and causing the openings 10 and 12 to register, thus admitting the air into the room. In its passage thus through the openings 10 the air will first impinge against the upper windowpane, thus breaking its force and causing a thorough draftless difiusion into the room atmosphere. It will be readily understood that the amount of air admittedcan be properlycontrolled, ac cording to requirement, by the movement of the slides 11 to more or less completely uncover the apertures 10. Furthermore, by employing the box-ventilators 7 the air may be admitted thereinto at one point, but will escape through all the apertures 10, thus providing for a diffused ventilation through a single ingress in the meeting sashes 3 4.

When the ingress 6 (shown in Fig. 5) is employed,the ventilators are placed so as to overlap the lower meeting-rail 3 of the upper-sash, as shown, which need not be the case in the ingress construction illustrated in Fig. 4. The devious course necessary to be taken by the air-in its passage into the room renders any tampering with the sash-fastener from the outside practically impossible even when the ventilators are wide open.

While I have shown and described the springs 19 and cords 20 for controlling the slides 11, it will be understood that the same may be varied or dispensed with without impairing t'heeifici-ency of the device, as the slide can be operated directly by the knobs 22 on the handpieces 16.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a windowventilator, the combination with the meeting sash-rails apertured to permit the passage therethrough of air, of a box-like structure located over said apertures to receive the air and having openings in its vertical wall adjacent to the upper windowpane, and means for controlling the passage of air through said openings, substantially as set forth.

2. In a window -'ventilatnr, the combination with the meeting sash-rails apertured to permit the passage therethrough of air, of an open-bottomed box located on said rails over said openings and having a series of openings in its vertical wall adjacent to the upper wit dow-pane, and a slide for adjustably controlling the passage of air through said openings, substantially as set forth.

3. In a window ventilator, the combination with the meeting sash-rails having one or more apertures to permit the passage therethrough of air, of a box-like structure located Over said apertures to receive the air and MV- ing a series of openings in its vertical wall adjacent to the upper window-pane, a slide in said structure ha-vin g openings corresponding with the openings in the vertical wall of said structure, a spring'for normally retain-ingspid slide in such position that said openings wfll be out of register, and means for movi-nger 8o retainingsaid slide against thetension spring to cause said openings toregister, substantially as set forth.

In testimony whereof I aflix my signature in the presence of two witnesses.

MICHAEL A. W. LOUIS.

Vitnesses PERCY B. HILLS, Gno. M. COPENHAVER. 

